KOLKATA, May 13 -- West Bengal chief minister Suvendu Adhikari on Wednesday took his oath as the legislator for Kolkata's Bhabanipur, announcing that Nandigram-the East Midnapore seat he has held since 2016-will now head to a by-election.

"I had to follow my party's decision. Someone else will be elected from Nandigram, but I promise that over the next five years, I will not let the people there feel even once that I am not their MLA. All promises made during the campaign will be kept," Adhikari said.

The chief minister, who is scheduled to visit Bhabanipur on Wednesday evening, recently toured Nandigram three times to thank voters following the Bharatiya Janata Party's (BJP) decisive victory, where they secured 207 of Bengal's 294 seat...